Pedestal-extension-table lock.



m.'s95,071. 4 PATENTED AUG. 4,1908.

0. s. Bfimon.

PEDESTAL EXTENSION TABLE LOCK.

uruonxox 211.52 JUL! 1. 1901.

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W/TMSSES: \j fume flM MGMZN MAM UNITED sTA"r Es PATENT OFFICE.

EMIL TYDEN, OF HASTINGS,

MICHIG. X.

PEDESTAL-EXTENSIOH-TABLE LOCK.

No. 895,071. Specification of Let-tens Patent. Patented Aug. 4, 1908.

Application filed July 1, 19m. Serial No. 381,709.

has of a pedestal extension ta To all whom it may concern:

Be itknown that I, CHARLES S. BURTON, a citizen of the United States,residing at Oak Park, in the county of Cook and State of Illinois, haveinvented new and useful Improvements in Pcdestal-Extension-Table Locks,of which the following is a spccifica tion, reference being had to theaccompanying drawings, forming a part thereof.

The purpose of this invention is to provide an improved device forlocking u the membl e, articularly adapted for use with edesta extensiontables in which the tab e to members have a limited range ofextensibility relatively to their pedestal members; that is, so that thetop can be opened to a certain extent without openingthe pedestal.

The invention consists of the features of construction shown anddescribed as indicated' in the claims.

In the drawingsz-Figure 1 is a longitu dinal vertical sect-ion of apedestal extension table embodying this invention, the table being shownin closed and locked condition both of pedestal members and top members.Fig. 2 is a similar view showing the middle portion of the table withthe top members opened to the extent necessary for admitting one lillerand giving access to the pedestal look, but with the pedestal stilllocked. Fig. 3 is a detail plan view showing the table-top lockingdevice. Fig. 4 is a detail section at the line 44 on Fig. 2.

\Yithout entering into details of the construction for the purpose whichis familiar, it may be understood that the table-to memhers, I and 2,are connected with their respcctive pedestal members, 3 and 4, forextension of the top relatively to the pedestal members; that is, sothat the top may be opened or spread apart for receiving fillers to acertain extent without opening the pe lestal.

For locking the two pedestal members together there may be provided anydesirable form of locking device adapted to connect said pedestalmembers when they are near together but \before they are completelyclosed, and to be. operated upon when the pedestal membersare thusconnected [or drawing said members tightly together. I have shown forthat purpose a latch, 5, pivotally connected to an tnstandin lever, 6,which is fnlcrumcd at its owcr end on a pcdestal member, 3, the latchbeing located at about the middle of the height of the pedestal andprovided with a slope-nosed hook, 5 at its free end adapting it to rideupon and become engaged with any suitable engaging device, as a staple,7, on the opposite odestal member, 4. tends through the center leg, 8,which is apertnred at S for the )urpose.

The lever, 6, has or pivoting at its fulcram a vertically elongatedslot, 6, adapting it to be raised and lowered about its pivot inaddition to 'l'ulcruming thereon in the rocking movement of the leverwhich is erforme when it is at the lower point which it will normallyoccu y by gravity, except when lifted as hereina'ter explained. Thelatch, 5, is stopped on the lever, 6, so that it will not fall behirw a)10)0I posit-ion extending nearly horizontal y tor engaging the oppositepedestal member. This is most conveniently effected, in view of the factthat the latch is made of a sheet metal stri folded u on itself, andhaving two layers riveted toget ier as shown, by making the foldconstitute a leap, 5*, through which the lever, 6, extends for pivotalconnection of the latch thereto, the back or cross of the loop, 5, beingstopped against the back edge of the lever for stopping the latch asdescribed. The lever, 6, extends up to the top of the pedestal andprotrudes somewhat there-above in position to be encountered by a fingeror thrust rod. 9, which is carried by the opposite table top member andis thrust across the parting plane f the two members above the top ofthe pedestal and center leg when the two tax-3e top members are closedtogether. It will be seen that with this construction if the latch, 5,is made of such length with respect to the position of the cooperatingelement on the opposite edestal member, that the two elements can becomeengaged while the podestal members are separated a distance of one inch,the closing up of the table-top members involving the movement of thenietnber, 2, toward the parting plane a distance of over two inchesafter he finger, 9, enct'untcrs the upper end of the lever, 6, or

any part thereon provided for such encounter. rocking the lever, 6, overits fulcrum a distance of two inches or more at the upper emi causing itto move one inch or over at the middle point where the latch, 5, isconnected to it, will thereby draw the pedestal 11:

The latch preferab y exi i i l l 'I have shown a simple form 1' springcatch a: :ing

reliance may be placed em irely non tiona-l hold of the tenonsvritl'r rh customarily provided for matctnm'- A catch or positive engaging deviceis preferable. and

comprising an abutment or hookit. on one table-top member and s slopetsrised hook or lat-ch, 1l,on the op cslte member. Such latch may belocatec in position for being easily reached by the operator todisengage it when the table is closed, but preferably, the parts. 10 and11, are mounted near the middle of the width of the table and the latch,11, is provided with an operating hill, 14, extending thence over thetop of the slides to the margin of the Is is where it terminates in asuitable handle. 15. in a position to be easily reached and pulled todisengage the latch.

In the constru tion as thus far described, it may be understood that thepedestallocking device is accessible at the tor) of the pedestal forunlocking the peaiesze. whenever the table-top members are spread eventhe distance for admitting one It will also be understood that thepedestai would not be unlocked at all unlessit was desired to extend thetable so i to 511122 11 more fill- I ers than could be admitted byextending the top members relatively to the pedestal. In the structureshown in the drawings it is assumed that the top is to be extended onlyfor admitting one filler while the pedestal remains locked, and there isshatnvn :2. device by which the iedestai is auto sricsiiy unlocked whent ie tabletop members are extended farther than this. This deviceconsists of a bcll-crank lever. 17-41%. "cit-ruined on the topof thepedestal member- 3 raving a horizontally extendirg arman eye, 6, in theupper en 0* I e and anupstanding arm.liwrmti mthepath of an abutment 10mounted on side of the table-top member- 1- ter of convenience and it ec)urpose as well as an edit: i have located the parts so 10, whichcarries the match n mentioned, which forms part a locking the twotable-trim mes: serves for this encotmternavL pose the abutment, It andthe )osition at which mounte is such as to cause tlm occur at some pointafter the it her, 1, has been extended o filler width,that is, its 1;admitting one flllcr. It ant encounter will rock the Fever- I P fullcrum, thus liftin the latch nose, 5, clear of i the staple. 7, andpermitting the pedestal to,

be opened. If the extension devices are constructed to allow the furtherextending'movement of he table-top member, 1, relative to the pedestal,the plate, 10, in such further xtending movement will run off the end ofthe lever arm, 18, and )ermit the lever to resume its normal positionwith the latch, 5, dropped to a point at which its nose will encounterthe staple, 7, in closing up the pedestal and become automatically engaed therewith. A light spring, 20, is provide operating on the lever, 1718, to hold it at the positzon at which the arm, 18, will beencountered. as described, by the abutment, 10, but which will. yield to)ermit the abutment to pass in over the end'of the lever arm when thetable top is closed up.

I claim?- 1. In a pedestal extension table having table top membersextensible relatively to their respective pedestal members incombination with such table top and )edestah members. cooperatingdevices carrier by the )edestal members for engaging said memers whenthey are near together and before they are closed, and for drawing thetwo members to ether after such engagement; an actuating element bywhich the drawing movement is communicated extending to the top of thepedestal, and means on one table top member for encountering saidactuating element to give said drawing movement at the end of theclosing movement of said table top members.

2. In a pedestal extension table having table top members extensiblerelatively to their respective pedestal members in combination with suchtable top and pedestal members. a pedestal locking device comprising twoelements located at a substantial distance from the top of the pedestal,one on each member of the pedestal, adapted to be engaged with eachother, one of said engaging elements being mounted for effecting theengagement and disengagement of said two elements and for drawing themembers togcther after such engagement; an actuating element by whichsuch movement is communicated extending to the top of the pedestal, andmeans on one table to member for communicating such disengaging movementin the extending. movement of said table top member.

3. In a pedestal extension table having table top members extensiblerelatively to their respective pedestal members, the combination withsuch table top and pedestal members of cooperating devices carried bythe pedestal members adapted for mutual engagement and disengagement,one of said devices being mounted for movement to effect the engagementand disengagement and for relaxing and closing the pedestal members; anactuating element extending from said movable element to the top of thepedestal member to which said element pertains; operatin means mountedon the upper partof said pedestal member for giving said actuatingclement said engaging 211K disengaging movement; means mounted on thetable top member pertaining to such pedestal member positioned forencountering said operating means to give the disengaging movement inthe extending movement of said table top member, and inde )endent meansmounted on one of the t: 10 top members for giving said actuatingelement the pedestal-closing movement in the closing movement of saidtable top member with respect to its pedestal member.

4. In a pedestal extension table having table top members extensiblerelatively to their respective pedestal members, in combination withsuch table top and pedestal members, a pedestal locking devicecomprising two elements located at a substantial distance below the topof the pedestal, one mounted on each member of the pedestal, adapted tobe engaged with each other, one of said engaging elements being mountedfor two independent movements, one for the engagement and disengagementof said two elements and the'other toward and from the opposite pedestalmember; an actuating element by which said two movmnents arecommunicated extending to the top of the pedestal, and means on onetable top member for encountering said actuating element to give thesecond above-mentioned movement at the end of the closing movement ofsaid table top members.

5. In a pedestal extension table. having table top members extensiblerelatively to their respective pedestal members, in combination withsuch table top and pedestal members, a pedestal locking devicecomprising two elements located at a substantial distance below the topof the pedestal, one mounted on each member of the pedestal,

adapted to be engaged with each other, one

of said engaging elements being mounted for two independent movements,one for the engagement and disengagement of said two elements and theother toward and from the opposite pedestal member; an actuating elementby which said two movements are communicated extending to the top of thepedestal, and means on one table-top member for giving said disengagingmovement in the extending movement of said table-top member.

6. In apedestal extension table having table top members extensiblerelatively to their respective pedestal members, in combi nation withsuch table top and pedestal members; a pedestal locking device comrising two element-s located at a substantia dis tance below the top ofthe pedestal and adapted for mutual engagement and disengagement, one ofsaid elements being mounted for two independent movements, one to cffeetthe engagement and disengagement and the other toward and from theopposite pedestal member for relaxing and closing the pedestal members;an actuating element extending from said movable engaging element to thetop of the pedestal member to which said engaging element pertains;operating means mounted at the upper )itli) of said pedestal member forgiving sa-ir actuating element said engaging and disengaging movement';means mounted on the table top member pertaining to said pedestal memberpositioned for encountering said operating means to give the disengagingmovement in the extending movement of said table top member, andindependent means mounted on one of the table top members for givingsaid actuating element the pedestal-closing movement in the closingmovement of said table top member with respect to its pedestal member.

7. In a pedestal extension table having the table top members extensiblerelatively to their respective pedestal members, in combination withsuch table top and pedestal members, a pedestal locking device comprising cooperating elements on the two pedestal members located at asubstantial distance below the top of the pedestal and adapted formutualengagement and disengagement; a vertically positioned lever towhich one of said cooperating elements is connected, having a range ofvertical movement with respect to its pivot for engaging and disengaging said elements and a range of swinging movement about its ivot towardand from the opposite pedestal member for drawing said members togetherwhen the two elements are engaged, said lever being extended to the topof the pedestal member on whieh it is mounted means at the upper part ofsaid pedestal member for raisin and lowering said lever; means on onetabIe top member for operating said raisingand-lowering means in themovement of said table top member with res ect to its pedestal member,and means on tie other table-top member for iving the lever the swingingmovement in the closing movement of said table top member. I

In testimony whereof, I have hereunto set my hand at Chicago, Illinois,this 24th day of June, 1907.

CHAS. S. BURTON.

Witnesses:

J. S. Anno'r'r, M. GERTRUDE A r.

